calla-



(No Model.)

c. J. CALLAHAN. BONE CUTTING MACHINE.

Patented Feb. 5; 1895.

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UNITED STATES PATENT Grains.

CORNELIUS J. OALLAHAN, OF MILFORD, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO J. L. LILLEY, OF SAME PLACE.

BONE-CUTTING MACHINE.

SPECIFIGATION forming part of Letters Patent No. 533,703, dated February 5, 1895.

Application filed January 2,1894. Serial No. 495,429. (No model.)

To aZZ whom it may concern:

Be it known that I, CORNELIUS J. GALLA- HAN, of Milford, county of \Vorcester, State of Massachusetts, have invented an Improvement in Bone-Outtin g Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention has for its object the production of a strong, simple and durable ma chine for cutting bone or other hard substances, rapidly and efiectively into small chips or portions, and in accordance therewith my invention consists in various details of construction to be hereinafter described and particularly pointed out in the claims.

Figure 1 in vertical section represents a bone cutting machine embodying myinvention, and Fig. 2 is a detail, in end elevation, of the hopper and cutter carrier.

I have herein shown the operating parts of the machine as mounted upon suitable legs or standards A, connected by braces A, and to the top of the standardsl have secured by suitable screws or bolts 2 the flanged base I) of a hopper 13, open at its top and bottom.

Brackets a, slotted at a, are adjustably secured to the inner sides of the standards by bolts 3 extended through the slots, said brackets having recesses a therein, seedotted lines Fig. 1, in which are pivoted friction rolls a the peripheries of the rolls projecting slightly above the tops of the brackets.

A reciprocating cutter carrier O, forms a movable bottom for the hopper l3, and rests upon the friction rolls a as clearly shown in the drawings, between them and the lower edges of the hopper.

As best shown in Fig. 2 the carrier is held from lateral movement by the inturned top a? of one of the standards, and by an adj ustable bearing 12, held in place by the top of the other standard and adjusted by set screws 4. The carrier is slotted diagonally at c, and a depending lug c secured to or forming a part of the carrier, between the slots 0, is beveled at its opposite faces, as at 0 parallel to said slots, to receive the cutters (Z, herein shown as corrugated or notched, and held in place by set screws (1, extended through slots,

not shpwp, in the cutters, and into the lug c,

atnrtnseuners may be adjusted when worn or ground down by adjusting screws 61 acting upon their lower edges and extended through projections on the lug 0.

Referring to Fig. 1, it will be seen that the cutters are oppositely turned, so that the machine will operate at each movement of the carrier G, the slot 0 being wide enough to form clearance spaces for the cutters.

Braces e extend from the lower end of the lug c to the bottom of the carrier, attached to the lug and carrier respectively by suitable fastenings 5 and 6, the top of the carrier being depressed below the edges of the cutters, as etc to present the material thereto in a thorough manner. I

An operating lever f is secured to a rock shaftf having its bearings in the standards A, and an arm f rigidly attached to the rock shaft, is connected by a link f to the lug c, whereby movement of the leverf back and forth will cause the cutter carrier to be reciprocated underneath the hopper B. The hopper is provided with a follower g, see Fig. l, easily movable up and down in the hopper, to the top of which follower is secured by screws 7 a cap g, hollowed out at 9 see dotted lines, to receive loosely the flanged base g of a threaded rod 9 having fast upon its upper end a hand wheel 9 The threaded rod g is guided and supported in a two-part bearing h, h, the two parts being pivoted at h to the sidesof the hopper. B, so that they may be swung down, as shown by dotted lines Fig. 2, when it is desired to remove the follower g to fill the hopper. Each part h of the bearing is provided with an ear h which rests upon thetop of the other part of the hearing when in closed position shown in full lines Figs. 1 and 2, and a locking pin 71, passed through the ear of one part into the top of the other part holds them securely together. 'Each part it has therein one-half of the threaded bearing for the threaded shank 9 To operate the machine the follower is re moved and the hopper B nearly filled with the bones or other material to be out, after which the follower is replaced, resting on the top of the contents of the hopper. The two parts 71, h, of the bearing are then brought together and locked, and the cutter carrier is reciprocated by the lever f and intermediate connections, as described, the cutters acting upon the bottom of the mass of material and cutting it into small chips or pieces, which fall through the openings c into any suitable vessel. As the material is cutor chipped the hand wheel 9 is rotated to turn the threaded 1o rod g in its bearingaud thereby cause thefollower g to descend, pressing the material upon the cutter carrier with an easily regulated force, the follower descending until all the material has been acted upon by thecutters. Limiting stops i may be secured to the ends of the cutter carrier, to limit .its movement in either direction and prevent displacement.

Vertical adjustment of the cutter carrier-is 2o accomplished by means of the adjustable brackets a, and lateral wear is taken up by the adjustable bearing 1), as described.

I am aware that vegetable cuttershave been constructed with a hopper for the material, to co-operate with a reciprocating cutter carrier, and I do not broadly claim such construction.

I claim- 1. In a machine for cutting bones, 850., a reciprocating cuttercarrier, cutters secured thereto, means to reciprocate said carrier, and a stationary hopper located above the cuttercarrier, combined with a follower positively movable up and down in said hopper, a ro- 5 tatable threaded rod connected at its lower end to and to move with the follower, and a separable threaded bearing for the rod, and secured to the hopper, the cutter-carrier being operative independent of said threaded scribed.

2. In a machine for cutting bones, 850., are

ciprocating cutter carrier, an open ended stationary hopper located above the carrier, and

rod, and vice versa, substantially asde-.,

scares vertically adjustable bearings for said oar- 5 rier, combined with a follower movable in the hopper, an actuating screw therefor, and a two-part stationary bearing for and in which the screw is rotated, the parts of the bearing being pivotally connected to the hopper at its top and adapted to be thrown back when the hopper is to be loaded, substantially as described.

3. A stationary hopper, its follower, standards to which the hopper is rigidly attached, and a reciprocating cutter carrier, combined with an adjustable lateral bearing for the carrier, friction rolls to bear upon its under side adjusting devices for said rolls, and means to reciprocate the carrier, substantially as de' scribed.

4. The reciprocable cutter carrier, diagonal slots therein for the cutters and to provide clearance spaces therefor, a lug depending, from the carrier between the slots and beveled at its opposite ends to receive the cutters, and a cutter projecting through each slot, combined with means to adjust the cutters, independently, a stationary hopper located above the cutter carrier, and means connected to saidlug to actuate thecutter carrier, sub.- stantially as described.

5. In a machine for cutting bones, &c., a stationary hopper, its follower, means to positively raise and lower it and a cutter carrier reciprocable below the hopper, combined with a lateral bearing for the carrier, bearings for its under side, and means to adjust said lateral and under side bearings, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CORNELIUS J. GALLAl-IAN.

Witnesses:

Jesse A. TAFT, Gno. E. SAWYER. 

